Air/fuel ratio control system for internal combustion engine...

Details Air/fuel ratio control system for internal combustion engine... Air/fuel ratio control system for internal combustion engine...

F - Mech Eng,Light,Heat,Weapons

02

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341/38.13

F02M 37/00 (2006.01) G05D 11/13 (2006.01)

Patent

CA 1084611

Abstract of the Disclosure In a feedback control system for maintaining the air/fuel ratio of a combustible mixture fed to an internal combustion engine at a preset ratio based on the output of an exhaust sensor, a control signal producing circuit having a proportional amplifier and/or an integrator is constructed so as to vary the pro- portionality constant or the time constant for the integration in dependence on the temperature and flow velocity of the exhaust gas, with a purpose of avoid- ing an error in the control attributable to a variation in the output characteristic of the exhaust sensor with variations in the condition of the exhaust gas by superficially shifting the air of the control from the preset ratio to a provisional ratio. - 1 -

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